Spark-arrester for locomotives.



C. A. RUSSELL.

SPARK ARRESTER FOR LOCOMOTIVES.

APPLICATION FILED ocT.29. 1917.

1,%62,@98 Patented Apr. 9, 1918.

C HHRLES H KussELL,

CHARLES A. RUSSELL, OF LAEAMIE, WYOMING, ASSIGNOR OF ONE-HALF T0 WALTER' GEORGE BELL, OF LARAMIE, WYOMING.

\ SPABK-ARBESTER FOR LOCOMOTIVES.

Specification of Letters Patent.

Patented Apr. 9, 1 918.-

Applicationfiled October 29, 1917; Serial No. 199,031.

To all whom it may concern;

Be it knownthat 1, CHARLES A; RUSSELL, a citizen of the UnitedStates, residing at Laramie, in the county of Albany and State of Wyoming, have invented certain new and useful Improvements in Spark-Arrestersfor Locomotives, of Which the following isa specification, reference being had to. the accompanying drawings.

This invention relates to,.spark arresters for locomotives, and has for itsfprimary object to provide adevice adapted to be mounted upon the smoke stackjwhich will arrest the sparkssand cinders so thatthey will not be blown. out of the stack byv the exhaust.

It is anotherandmore particular object of my. invention to.provide: a spark arrester adapted to be mountedabove and inspaced relation to the upper open end of thesmoke stack and including a cinder receiving trough constructed to discharge the-Cinders by gravity intosuitable outlets and means for directing the sparks and cindersinto the trough but permitting ofthe free outlet :of the smoke.

It is also a more particularobject of the invention to provide a spark arresterhaving means for. effecting the separation of the smoke from the Cinders, which. will not create a backpressur'e through the smoke stack andthereby interfere With the proper operation of thedraft creating .exhaust.

The invention also has fora further general-object to provide a spark arrester as above characterized Which is: simple in its n ru n asrw ll se fi ient nd' e ia in practical operation, and which; may be readily applied to the ordinary locomotive smoke stack, without necessitating any struc tural alteration in the latter.

With the above and other objects in vievv, my invention consists in the novel features of construction, combination and 1 arrange ment of parts to-be hereinafterinorefully des ib d; laimed nd accompany ng draw reieren'qe rs esignate orresp ing parts throughout the several'viewsand in tvhich f.

Figure; 1 isa,v rticalratioualg ev llusrillust ated; n he, wher ini ll c t.

trating the preferred embodiment of my invention appliedto the smoke stack of a locomotive;

Fig. 2' is a fragmentary sectional view taken on the line 22 of Fig. .1; and

Fig. 3fisa bottom plan view.

Referring in detail to the drawing 5, desig nates the outer cylindrical body walliofthe device the lower portion of Which is inwardly inclined as at 6'and'ii'itegrally connected by means ofthe substantially cylindrical Wall 7 to an inner upwardly and inwardly inclined annular Wall 8. The connecting Wall 7 forms a cinder receiving trough-9 of substantially circular formin cross section, The Walls 6 and 8 at their pointsof; juncture with the walls 7 are spaced apart to ,afl ordj a continuous annular tr nce. outh .0" to he ro g l' e Wa1l' 8'in;gene ral defines a truncated cone the upper end of which terminatesat a point belovvilthe straight vertical portion of the body \va 5.

Inxvardly projecting lugs 11 are formed on the trough Wall? andjare provided with threaded sockets to receive the threaded upper end of the supporting rods 12, the l'ovver endsof which; are suitably mounted upon the upper enl ofthe smoke stack. v It will be noted from acomparisonof Figs. 1 and 2 of the drawing that the walls hand 8 are directly connected to the circular trough Wall 7"only at diametrically opposed points at the front and rear of the device, and from these points, the trough Wall 91 is provided with obliquelyinclined convergent portions indicated at 1' 3 'Which extend around each side of the device in a downward direction, These downwardly I inclined portions of the trough Wall 7 are connected to the inclined Walls '6 and' 8 by the spaced vertical extension 6" and 8 of said Walls. Thus it will be understood that the entrance throat 10'into the trough gradually increases in depth from the front andrearofthedevice to the pp it sides hereof-1 At heji mt re f he. ownw r y n ined; rerg o i tihez incler.tr ushlsuitable r i is hargepip onn e oi s efp oi' d dg tical openings extending therethrough to receive the lower ends of supporting rods 16. These rods are provided with stop flanges 17 for engagement upon the upper surface of the wall 8 and nuts 18 are threaded upon the lower ends of said rods. The smoke directing and spark arresting member 19 is in the form of an inverted cone circular in cross section and at its larger upper end is provided with a wide arcuately curved laterally and downwardly extending flange 20. This flange is provided with openings through which the upper ends of the supporting rods 16 are engaged, and additional stop flanges 21 are also provided upon the upper ends of the rods to limit the downward movement of the member 19 thereon. The upper ends of said rods are threaded to receive the clamping nuts 22. It is to be noted that the lower edge of the flange 20 is disposed at a point above and in spaced relation to the horizontal plane of the upper edge of the wall 8.

Preferably, the flange 20 is provided with equidistantly spaced smoke exit slots 23 extending in parallel relation to the axis of the member 19. Attention is particularly called to the fact that these slots are located at a point in spaced relation to the highest point of, the flange 20 and outwardly thereof, while the upper edge of the wall 8 is located in a vertical plane inwardly of this point on the flange 20. The purpose of this relative location of the slots and the upper edge of the wall 8 with respect to the crest of the flange 20 will presently appear.

In the operation of the device, the smoke is forced upwardly through the smoke stack by the exhaust in the usual manner the centrifugal action tending to direct thesparks and cinders outwardly and against the in wardly inclined wall 8 by which they are directed inwardly against the sides of the inverted cone 19. This conical deflecting member directs the products of combustion together with the sparks and cinders upwardly and outwardly against the inner face of the flange 20 and when the sparks and cinders reach the central point or the crest of this flange which as above stated is located outwardly of the inner edge of the wall 8, they will drop downwardly by gravity upon the wall 8 and be outwardly directed by this wall into the trough 9 through the annular mouth 10 thereof. The smoke, is thus freed of the sparks and cinders and finds an exit through the slots 23 and around.

the lower edge of the flange 20 and passes freely upwardly between said flange and the wall 5. This smoke outlet, has an area which is substantially equal to'the internal area of the smoke stack upon which the device is mounted and aflords amplespace for the escape of the smoke, and effectually prerents back pressure through the smoke stack, which would interfere with the t-flective operation of the draft exhaust. As hereinbefore stated the sparks and Cinders upon entering the trough 9 move by gravity through said trough to points at opposite sides of the device and are discharged at a suitable point through the pipes or connections 14:.

From the foregoing description taken in connection with the accompanying drawing, the construction, manner of operation and several advantages of my improved spark arrester will be clearly and fully understood. I have found the device highly efl'ective and reliable in practical operation and have demonstrated that the use thereofwill positively prevent live embers and sparks being blown from the stack by the exhaust, thereby obviating liability of structures of a more or less inflammable character which are contiguous to the right of way, being ignited by falling sparks. It is at the same time to be noted that the device presents no impediment or obstruction to the free exit of the smoke. The spark arrester as herein described, may be manufactured in various sizes, and while I have herein referred to the rods 12 for supporting the device upon the smoke stack, it will be apparent that various other alternative supporting means may be employed. In practice, the arrester will be supported above the upper end of the smoke stack at a distance of from one to three feet, which I have found gives the best results.

The several parts of the device may be made.

of pressed steel, malleable iron or other suit able metal. The device as a whole is also of relatively simple construction and may be manufactured at comparatively small cost.

While I have herein described the pre ferred form, construction and arrangement of the several detail parts of the invention, it is to be understood that the same are susceptible of considerable modification and I therefore reserve the privilege of adopting all such legitimate changes as may be fairly embodied within the spirit and scope of the invention as claimed.

Having thus fully described my invention, what I claim is I 1. A spark arrester comprising an outer body wall, an inwardly and upwardly inclined annular wall disposed, inwardly of and in spaced relation to said body wall, said walls being integrally connected by a wall forming a cinder receiving trough, and means supported upon said inner inclined wall and extending downwardly below the upper edge of the latter wall to direct the sparks outwardly and downwardly into said trough.

2. A spark arrester-lncludmg a body having inner and outer downwardly converging annular walls integrally connected in spaced relation to each other at their lower ends by a wall forming a continuous'ci-nder receiving trough, an inverted deflecting-cone extending downwardly within said inner annular wall and having an outwardly and downwardly curved flange on its upper end terminating at a point substantially midway betweensaid inner and outer body walls, the crest ofsaid curved flange being located at a point intermediate of the lower edge of said flange and of the upper edge of said inner annular wall.

3. A spark arrester including a body having inner and out-er downwardly converging annular walls integrally connected in spaced relation to each other at their lower ends by a wall forming a continuous cinder receiving trough, an inverted deflecting cone extending downwardly within said inner annular wall and having an outwardly and downwardly curved flange on its upper end terminating at a point substantially midway between said inner and outer body walls, the crest of said curved flange being located at a point intermediate of the lower edge of said flange and of the upper edge of said inner annular wall, and means mounted upon said inner body wall for supporting the deflecting member.

4:. A spark arrester including a body having inner and outer downwardly converging annular walls integrally connected in spaced relation to each other at their lower ends by a wall forming a continuous cinder receiving trough, an inverted deflecting cone extending downwardly within said inner annular wall and having an outwardly and downwardly curved flange on its upper end terminating at a point substantially midway between said inner and outer body walls, the crest of said curved flange being located at a point intermediate of the lower edge of said flange and the upper edge of said inner annular wall, said flange of the deflecting member being provided with a plurality of smoke exit openings.

5. A spark arrester comprising a body having an outer wall, an inner upwardly and inwardly inclined annular wall and a wall integrally connecting said inner and outer walls and forming a cinder receiving trough, a deflecting member mounted upon the inner wall and extending downwardly within the same, said deflecting member having a laterally and downwardly curved flange on its upper end, the crest of said flange being located outwardly of the vertical plane of the upper edge of said inner annular Wall and the lower edge of said flange terminating at a point above the horizontal plane of the upper edge of said annular wall.

6. A spark arrester comprising a body having anouter wall, an inner upwardly and inwardly inclined annular wall and a wall integrally connecting said inner and outer walls and forming a cinder receiving trough, a deflecting member mounted upon the inner wall and extending downwardly within the same, said deflecting member having a laterally and downwardly curved flange on its upper end, the crest'ot'said flange being located outwardly of the vertical plane of the upper edge of said inner annular wall and the lower edge of said flange terminating at a point above the hori zontal plane of the upper edge of said annular wall, said flange being provided with a plurality of smoke exit openings.

7. A spark arrester comprising a body having an outer wall, an inner upwardly and inwardly inclined annular wall and a wall integrally connecting said inner and outer walls and forming a cinder receiving trough, a deflecting member mounted upon the inner wall and extending downwardly within the same, said deflecting member having a laterally and downwardly curved flange on its upper end, the crest of said flange being located outwardly of the vertical plane of the upper edge of said inner annular wall and the lower edge of said flange terminating at a point above the horizontal plane oi? the upper edge of said annular wall, said flange being provided with a plurality of smoke eXit openings located between the crest of said flange and the vertical plane of the lower edge oi" said flange.

8. A spar; arrester comprising a body having an outer annular wall, an inner upwardly and inwardly inclined wall and a trough -wall integrally connecting the spaced lower edges of said walls, said trough having downwardly inclined converging sections at the opposite sides 01": said body and a drain pipe connected to said sections at their juncture, and a deflecting member supported above said inner inclined body wall and having downwardly and outwardly curved flange terminating on a plane above the upper edge of said inner body wall and operating to direct the sparks and cinders downwardly upon said wall and thence into the trough and to direct the smoke outwardly between said flange and the outer body wall.

9. A spark arrester comprising a body having an outer annular wall, an inner upwardly and inwardly inclined wall and a trough wall integrally connecting the spaced lower edges of said walls. said trough having downwardly inclined converging sections at the opposite sides of said body and a drain pipe connected to said sections at their juncture, and a deflecting member supporting said inner inclined body Wall and body wall, said flange being provided with having a downwardly and outwardly curved a plurality of smoke exit openings. 10 flange terminating on a plane above the up- In testimony whereof I hereunto afiix my per edge of said inner body wall and opsignature in the presence of two witnesses.

erating to direct the sparks and cinders CHARLES A. RUSSELL.

downwardly upon said Wall and thence into -VJitnesses: the trough and to direct the smoke out- HENRY N. JENSEN, wardly between said flange and the outer A. E. CADY.

Copies 0! this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

. Washington, I). C. 

